Move documentation source file to the dedicated sub directory

... and ignore the documentation files built.

Change-Id: Ia5a02aaaa288d38da0ab287ef4fc527e4ba4cfd5

.gitignore

@@ -5,5 +5,6 @@
 vendor/*
 Gemfile.lock
 packstack.egg-info
+docs/build
 releasenotes/build
 .stestr

packstack/installer/basedefs.py

@@ -30,7 +30,7 @@ FILE_YUM_VERSION_LOCK = "/etc/yum/pluginconf.d/versionlock.list"
 
 PACKSTACK_SRC_DOC = os.path.realpath(
     os.path.join(os.path.abspath(
-        packstack.__path__[0]), '..', 'docs/packstack.rst'
+        packstack.__path__[0]), '..', 'docs/source/packstack.rst'
     )
 )
 if os.path.exists(PACKSTACK_SRC_DOC):

setup.cfg

@@ -23,7 +23,7 @@ packages =
     packstack
 
 data_files =
-    share/packstack = docs/packstack.rst
+    share/packstack = docs/source/packstack.rst
 
 [global]
 setup-hooks =

tox.ini

@@ -31,7 +31,7 @@ setenv = NOSE_WITH_COVERAGE=1
 commands = {posargs}
 
 [testenv:docs]
-commands = sphinx-build -a -E -W -d docs/build/doctrees -b html docs docs/build/html
+commands = sphinx-build -a -E -W -d docs/build/doctrees -b html docs/source docs/build/html
 
 [testenv:releasenotes]
 deps = -r{toxinidir}/test-requirements.txt